Question about Singer Quantum 9940 Computerized Sewing Machine

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Error message shows foot pedal, power to machine intermittent

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Good day!

please try this simple tips:

Good day!

A sewing machine operator can often help themselves when their machine does not operate properly.
Here are some simple instructions, which if properly used can save time and mechanics service calls.
TROUBLE;UPPER THREAD KEEPS BREAKING;
This could be trouble;================Do this;
1.Top tension to tight================loosen tension 1 turn
2.Machine improperly threaded=========check threading
3.Thread twisted on guide post========"
4.Thread twisted out of tension======="
5.Take up spring bent or broken=======Check action of spring
6.Thread jumped off pull off finger===Check threading
7.Needle bent or burred===============new needle
8.Bad cone of thread==================try another cone
TROUBLE;LOWER THREAD KEEPS BREAKING;
1.Bobbin tensionspring to tight=======Loosen tension slightly
2.Bobbin threaded wrong===============check threading
3.Bobbin wound to tight or uneven=====try new bobbin
4.lint or thread on bobbin case=======clean inside case
5.Lint or thread inside hook==========clean inside hook
6.Bobbin case nicked bent or burred===check/change case
TROUBLE;MACHINE STARTED SKIPPING STITCHES;
1.Needle bent or burred===============change
2.Needle set in crooked===============Check
3.Thread jumped off take up spring====check threading
4.Thread jumped off pull off finger===check threading
TROUBLE STITCHES SHOWING LOOPS;
1.Forming loops on top of cloth=======Tighten bobbin tension
======================================or loosen top tension.
2.forming loops on bottom of cloth====Tighten top tension
3.Bobbin placed in case incorrectly===remove and replace
4.Bobbin thread slipped from under====check threading of
tension===============================bobbin case
5.Lint or thread in top tension=======clean between tension discs


Thank you and good luck.

Posted on May 29, 2011

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Posted on Jan 02, 2017

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1 Answer

Brother sewing machine foot pedal does not make machine sew.power is on,but pushing on pedal makes machine say error.opened foot pedal,but do not see obvious problem.wonder if way to troubleshoot?


The owner's manual probably has a troubleshooting section. If the machine is giving an error, search for that error:

Make Model (error code)

...

Feb 26, 2017 | Brother Sewing Machines

1 Answer

Error message when trying to thread bobbin. Says to put presser foot in sewing position but doesn't help, keeps stopping as I push on the pedal


Consult your owner's manual. There should be instructions what to do when the error message appears on your machine. Check the Troubleshooting section.

...

Dec 01, 2015 | Sewing Machines

1 Answer

E 1 error message


Make sure you lower the presser foot before continuing the operation.

The foot controller was pressed (or the start/stop button

was pressed if the foot controller is not connected)

and the reverse/reinforcement stitch button
was pressed while the presser foot was raised.

Mar 01, 2014 | Brother CS6000i Computerized Sewing...

1 Answer

My machine shows FO4 message and none of the buttons are working for this message.


There are 2 things that cause the F04 error.
1 - Wrong foot control: If you have 2 machines, you might have them mixed up between machines.
2 - Burned out foot control.

Bring the machine to a Brother shop; try the new foot control on your machine before you buy it.

The part number is XC7290051
Alternative Part Numbers Include XC6651321, XC6651221, XC6651121, XA3931051, XC1154051 & XC6651051

Apr 16, 2012 | Brother SE-270D Computerized Sewing...

2 Answers

Foot pedal error


Yep same thing .....the thing is possessed started running by itself when I was at the iron. Dealer said never heard of such a thing and acted like it was me. Also will not stop sewing when take foot off pedal. Dealer charged me $95 to clean machine and said nothing wrong with foot pedal. Ugh. Has anyone replaced foot pedal and found the problem to stop properly?

Mar 15, 2012 | Janome Memorycraft 6500P Computerized...

1 Answer

Nx400 error message F04?


I had the problem with the error code F04 and found out that it is your foot pedal for the machine. Unplug it and it should start right up as ours did.You will need to fix or buy a new foot pedal. When they repair and or clean your machine they don't use your foot pedal but they use their own so they will miss the broken foot pedal.

I hope this helps you.
Bob

Jan 19, 2011 | Brother NX-400

1 Answer

I am getting error message E4 when foot pedal is plugged in. Unplug the foot pedal and the machine goes back to normal with the exception that you really can't sew without the foot pedal.


Your reverse reinforcement stitch button was pushed or needle position was pushed while bobbin winder was moved to the right. You can download a free manual brother-usa.com and you will see all of the troubleshooting and error messages there

Sep 10, 2010 | Brother CE4000 Computerized Sewing Machine

3 Answers

What is err code F04


It most likely is your foot pedal. Unplug your foot pedal and start the machine without it. If it works properly without the foot pedal plugged in then your foot pedal needs repaired or replaced. This worked for us with the NX400 machine and I am sure the NX450 is closely similar. Don't bother to buy a Manual if you didn't already get one with the machine. A Service manual and parts manual is best; But just so you know they don't show the error codes unless you are a qualified and authorized repair person for the machines. I got my info from the repair man where my wife buys and repairs her machines. I am an electronic technician and mechanic so I understand how this system works. I will be repairing my wife's machines from now on.

Aug 21, 2010 | Brother NX-400

1 Answer

Keeps giving me the Fc warning signal no matter what I do


The foot control has been disconnected while sewing. Turn off te power and connect the foot control.(connected to foot pedal on the floor has come loose from machine body)

Jul 15, 2010 | Kenmore 19110 Computerized Sewing Machine

2 Answers

Run away foot pedal.


I also have this problem with the pedal to my Janome Platinum 720. Took it to my dealer yesterday and the pedal is NOT under warranty and it costs $80 to replace. That is outrageous and I am trying to find another solution. They (Who??) are ripping us off. My machine is only year and half old and I only use it to take to classes. My Kenmore and Necchi machine pedals are still working after many many years of use.

Jun 25, 2009 | Janome Sewing Machines

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